TY JOUR TI PARADOX AS THE BOUNDARY OF THE APPLICABILITY OF MATHEMATICS KW mathematical paradox KW limits of applicability KW incomprehensible effectiveness of mathematics KW Eugene Wigner KW Russell's paradox KW Gödel's incompleteness theorems KW axiomatic set theory JO Scientific Papers Collection of the Angarsk State Technical University AU Mustafin, A.A. PY 2026 IS 2026 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»